chore: disable omnifunc

lua/plugins/configs/lspconfig.lua

@@ -9,8 +9,6 @@ function M.on_attach(client, bufnr)
 
    client.resolved_capabilities.document_formatting = false
    client.resolved_capabilities.document_range_formatting = false
-   -- Enable completion triggered by <c-x><c-o>
-   buf_set_option("omnifunc", "v:lua.vim.lsp.omnifunc")
 
    require("core.mappings").lspconfig()
 end